1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
/* Copyright (C) 2002 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifdef __GNUC__
#pragma implementation
#endif
#if defined(WIN32) || defined(__WIN__)
#undef SAFEMALLOC /* Problems with threads */
#endif
#include "mysql_priv.h"
#include "sp_pcontext.h"
#include "sp_head.h"
sp_pcontext::sp_pcontext()
: Sql_alloc(), m_params(0), m_framesize(0), m_handlers(0), m_cursmax(0)
{
VOID(my_init_dynamic_array(&m_pvar, sizeof(sp_pvar_t *), 16, 8));
VOID(my_init_dynamic_array(&m_cond, sizeof(sp_cond_type_t *), 16, 8));
VOID(my_init_dynamic_array(&m_cursor, sizeof(LEX_STRING), 16, 8));
m_label.empty();
}
void
sp_pcontext::destroy()
{
delete_dynamic(&m_pvar);
delete_dynamic(&m_cond);
delete_dynamic(&m_cursor);
m_label.empty();
}
/* This does a linear search (from newer to older variables, in case
** we have shadowed names).
** It's possible to have a more efficient allocation and search method,
** but it might not be worth it. The typical number of parameters and
** variables will in most cases be low (a handfull).
** And this is only called during parsing.
*/
sp_pvar_t *
sp_pcontext::find_pvar(LEX_STRING *name)
{
uint i = m_pvar.elements;
while (i-- > 0)
{
sp_pvar_t *p;
get_dynamic(&m_pvar, (gptr)&p, i);
if (my_strnncoll(system_charset_info,
(const uchar *)name->str, name->length,
(const uchar *)p->name.str, p->name.length) == 0)
{
return p;
}
}
return NULL;
}
void
sp_pcontext::push_pvar(LEX_STRING *name, enum enum_field_types type,
sp_param_mode_t mode)
{
sp_pvar_t *p= (sp_pvar_t *)sql_alloc(sizeof(sp_pvar_t));
if (p)
{
if (m_pvar.elements == m_framesize)
m_framesize += 1;
p->name.str= name->str;
p->name.length= name->length;
p->type= type;
p->mode= mode;
p->offset= m_pvar.elements;
p->isset= (mode == sp_param_out ? FALSE : TRUE);
insert_dynamic(&m_pvar, (gptr)&p);
}
}
sp_label_t *
sp_pcontext::push_label(char *name, uint ip)
{
sp_label_t *lab = (sp_label_t *)sql_alloc(sizeof(sp_label_t));
if (lab)
{
lab->name= name;
lab->ip= ip;
m_label.push_front(lab);
}
return lab;
}
sp_label_t *
sp_pcontext::find_label(char *name)
{
List_iterator_fast<sp_label_t> li(m_label);
sp_label_t *lab;
while ((lab= li++))
if (my_strcasecmp(system_charset_info, name, lab->name) == 0)
return lab;
return NULL;
}
void
sp_pcontext::push_cond(LEX_STRING *name, sp_cond_type_t *val)
{
sp_cond_t *p= (sp_cond_t *)sql_alloc(sizeof(sp_cond_t));
if (p)
{
p->name.str= name->str;
p->name.length= name->length;
p->val= val;
insert_dynamic(&m_cond, (gptr)&p);
}
}
/*
* See comment for find_pvar() above
*/
sp_cond_type_t *
sp_pcontext::find_cond(LEX_STRING *name)
{
uint i = m_cond.elements;
while (i-- > 0)
{
sp_cond_t *p;
get_dynamic(&m_cond, (gptr)&p, i);
if (my_strnncoll(system_charset_info,
(const uchar *)name->str, name->length,
(const uchar *)p->name.str, p->name.length) == 0)
{
return p->val;
}
}
return NULL;
}
void
sp_pcontext::push_cursor(LEX_STRING *name)
{
LEX_STRING n;
n.str= name->str;
n.length= name->length;
insert_dynamic(&m_cursor, (gptr)&n);
if (m_cursor.elements > m_cursmax)
m_cursmax= m_cursor.elements;
}
/*
* See comment for find_pvar() above
*/
my_bool
sp_pcontext::find_cursor(LEX_STRING *name, uint *poff)
{
uint i = m_cursor.elements;
while (i-- > 0)
{
LEX_STRING n;
get_dynamic(&m_cursor, (gptr)&n, i);
if (my_strnncoll(system_charset_info,
(const uchar *)name->str, name->length,
(const uchar *)n.str, n.length) == 0)
{
*poff= i;
return TRUE;
}
}
return FALSE;
}
|
